Window Hide Tool 1.9 Window Hide Tool will help you to quickly hide a window of any application. You can set hotkeys for basic program commands: hide a window; hide all windows; hide a group of windows. Or you can hide a window by clicking an icon in your tray. Moreover, you can specify groups of windows by their title text and set hotkeys for them. (For example, a group can comprise all windows that have 'Internet Explorer' in their title text.)